Tsunami wave run-up load reduction inside a building array

Cellular automata is the model applied in very complicated situations and complex problems. It involves the Introduction of voronoi diagram in tsunami wave propagation with the help of a fast-marching method to find the spread of the tsunami waves in the coastal regions. In this study we have modelled and predicted the tsunami wave propagation using the finite difference method. This analytical method gives the horizontal and vertical layers of the wave run up and enables the calculation of reaching time.

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Multi-method observation and analysis of an impulse wave and tsunami caused by glacier calving

The Cryosphere Discussions ◽

10.5194/tcd-9-6471-2015 ◽

2015 ◽

Vol 9 (6) ◽

pp. 6471-6493 ◽

Cited By ~ 5

Author(s):

M. P. Lüthi ◽

A. Vieli

Keyword(s):

Tsunami Wave ◽

Tide Gauge ◽

Impulse Wave ◽

West Greenland ◽

Tsunami Waves ◽

The Future ◽

History Of ◽

Impulse Waves ◽

Run Up

Abstract. Glacier calving can cause violent impulse waves which, upon landfall, can lead to destructive tsunami-like waves. Here we present data acquired during a calving event from Eqip Sermia, an ocean-terminating glacier in West Greenland. During an exceptionally well documented event, the collapse of 9 × 105 m3 ice from a 200 m high ice cliff caused an impulse wave of 50 m height, traveling at a speed of 25–30 m s-1. This wave was filmed from a tour boat in 800 m distance from the calving face, and simultaneously measured with a terrestrial radar interferometer and a tide gauge. Tsunami wave run-up height on the steep opposite shore in 4 km distance was 10–15 m, destroying infrastructure and eroding old vegetation. These observations indicate that such high tsunami waves are a recent phenomenon in the history of this glacier. Analysis of the data shows that only moderately bigger tsunami waves are to be expected in the future, even under rather extreme scenarios.

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Simulation of Tsunami Wave Generated by Submarine Slide: Generation, Propagation, Run-Up and Impact

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.752-753.1269 ◽

2015 ◽

Vol 752-753 ◽

pp. 1269-1274 ◽

Cited By ~ 1

Author(s):

Vo Nguyen Phu Huan ◽

Indra Sati Hamonangan Harahap

Keyword(s):

Tsunami Wave ◽

Offshore Structures ◽

Difficult Problem ◽

The Other ◽

Comprehensive Model ◽

Smooth Particle Hydrodynamics ◽

Submarine Slide ◽

Particle Hydrodynamics ◽

Submarine Slides ◽

Run Up

Submarine slides can trigger tsunamis with high affecting offshore structures, subsea facilities and human lives along the shoreline. Unfortunately, slide-generated tsunami is a difficult problem due to the source of sliding of mass failure by itself or by the other earthquakes. There are no effective numerical model that could simulate simultaneously all stages of generation, propagation, run-up and impact of tsunami phenomena. Physical understanding of slide tsunami hazards is very poor. We must understand substance of tsunami clearly and how to find methods to reduce damage from tsunami wave. This paper will present a parallel computing based on ParallelSPHysics, it can simulate a comprehensive model of tsunami wave by using Smooth Particle Hydrodynamics method.

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A numerical study of tsunami wave impact and run-up on coastal cliffs using a CIP-based model

Natural Hazards and Earth System Science ◽

10.5194/nhess-17-641-2017 ◽

2017 ◽

Vol 17 (5) ◽

pp. 641-655 ◽

Cited By ~ 2

Author(s):

Xizeng Zhao ◽

Yong Chen ◽

Zhenhua Huang ◽

Zijun Hu ◽

Yangyang Gao

Keyword(s):

Incident Wave ◽

Tsunami Wave ◽

Critical Value ◽

Tsunami Source ◽

Solid Boundary ◽

Wave Impact ◽

Submarine Slope ◽

Coastal Cliffs ◽

Run Up ◽

The Impact

Abstract. There is a general lack of understanding of tsunami wave interaction with complex geographies, especially the process of inundation. Numerical simulations are performed to understand the effects of several factors on tsunami wave impact and run-up in the presence of gentle submarine slopes and coastal cliffs, using an in-house code, a constrained interpolation profile (CIP)-based model. The model employs a high-order finite difference method, the CIP method, as the flow solver; utilizes a VOF-type method, the tangent of hyperbola for interface capturing/slope weighting (THINC/SW) scheme, to capture the free surface; and treats the solid boundary by an immersed boundary method. A series of incident waves are arranged to interact with varying coastal geographies. Numerical results are compared with experimental data and good agreement is obtained. The influences of gentle submarine slope, coastal cliff and incident wave height are discussed. It is found that the tsunami amplification factor varying with incident wave is affected by gradient of cliff slope, and the critical value is about 45°. The run-up on a toe-erosion cliff is smaller than that on a normal cliff. The run-up is also related to the length of a gentle submarine slope with a critical value of about 2.292 m in the present model for most cases. The impact pressure on the cliff is extremely large and concentrated, and the backflow effect is non-negligible. Results of our work are highly precise and helpful in inverting tsunami source and forecasting disaster.

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Numerical Simulation of Conservation Laws with Moving Grid Nodes: Application to Tsunami Wave Modelling

10.26686/wgtn.12501854.v1 ◽

2020 ◽

Author(s):

Gayaz Khakimzyanov ◽

Denys Dutykh ◽

Dimitrios Mitsotakis ◽

Nina Yu Shokina

Keyword(s):

Finite Volume ◽

Water Waves ◽

Tsunami Wave ◽

Spatial Dimension ◽

Finite Volume Scheme ◽

Large Solution ◽

Monitor Function ◽

Interpolation Procedure ◽

Run Up ◽

Grid Nodes

In the present article, we describe a few simple and efficient finite volume type schemes on moving grids in one spatial dimension combined with an appropriate predictor–corrector method to achieve higher resolutions. The underlying finite volume scheme is conservative, and it is accurate up to the second order in space. The main novelty consists in the motion of the grid. This new dynamic aspect can be used to resolve better the areas with large solution gradients or any other special features. No interpolation procedure is employed; thus, unnecessary solution smearing is avoided, and therefore, our method enjoys excellent conservation properties. The resulting grid is completely redistributed according to the choice of the so-called monitor function. Several more or less universal choices of the monitor function are provided. Finally, the performance of the proposed algorithm is illustrated on several examples stemming from the simple linear advection to the simulation of complex shallow water waves. The exact well-balanced property is proven. We believe that the techniques described in our paper can be beneficially used to model tsunami wave propagation and run-up.

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Study on Analytical Modelling of Tsunami Wave Propagation

Intelligent Systems and Computer Technology - Advances in Parallel Computing ◽

10.3233/apc200188 ◽

2020 ◽

Author(s):

Yasmin Regina M ◽

Syed Mohamed E

Keyword(s):

Wave Propagation ◽

Arrival Time ◽

Tsunami Wave ◽

Wave Train ◽

Deep Ocean ◽

Vital Role ◽

The People ◽

Run Up ◽

Short Time ◽

Tsunami Amplitude

Modelling of tsunami wave propagation plays a vital role in forecasting of disastrous tsunami. The earlier identification and prediction of tsunami provides more time for taking preventive measures and evacuation. On December 26, 2004, massive destruction of lives and properties due to tsunami increases the needs to develop a fast and accurate modelling of tsunami wave propagation. The modelling of waves provide the amplitude of tsunami, speed, arrival time and power of the wall of water and also run up distance and height. It also used to predict vulnerable buildings to tsunami. In this paper describes the modelling of tsunami wave propagation from generation to run-up. Numerical and analytical methods used for modelling and simulation. Tsunami is serious of wave (wave train) which has a long wavelength >500 km and celerity of wave more than 800 km/hr in deep ocean and in shallow coast, their wavelength and celerity diminishes but the amplitude of wave increases above 30m. The scope of this study is to determine the areas which are going to hit by tsunami, amplitude of wave and their arrival time for early forecasting and alert the people within a short time after an earthquake happened.

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Numerical Investigations of Tsunami Run-Up and Flow Structure on Coastal Vegetated Beaches

Water ◽

10.3390/w10121776 ◽

2018 ◽

Vol 10 (12) ◽

pp. 1776 ◽

Cited By ~ 2

Author(s):

Hongxing Zhang ◽

Mingliang Zhang ◽

Tianping Xu ◽

Jun Tang

Keyword(s):

Wave Propagation ◽

Numerical Model ◽

Peak Flow ◽

Tsunami Wave ◽

Coastal Vegetation ◽

Coastal Forest ◽

Governing Equations ◽

Tsunami Waves ◽

Run Up ◽

Sloping Beach

Tsunami waves become hazardous when they reach the coast. In South and Southeast Asian countries, coastal forest is widely utilized as a natural approach to mitigate tsunami damage. In this study, a depth-integrated numerical model was established to simulate wave propagation in a coastal region with and without forest cover. This numerical model was based on a finite volume Roe-type scheme, and was developed to solve the governing equations with the option of treating either a wet or dry wave front boundary. The governing equations were modified by adding a drag force term caused by vegetation. First, the model was validated for the case of solitary wave (breaking and non-breaking) run-up and run-down on a sloping beach, and long periodic wave propagation was investigated on a partially vegetated beach. The simulated results agree well with the measured data. Further, tsunami wave propagation on an actual-scale slope covered by coastal forest Pandanus odoratissimus (P. odoratissimus) and Casuarina equisetifolia (C. equisetifolia) was simulated to elucidate the influence of vegetation on tsunami mitigation with a different forest open gap. The numerical results revealed that coastal vegetation on sloping beach has significant potential to mitigate the impacts from tsunami waves by acting as a buffer zone. Coastal vegetation with open gaps causes the peak flow velocity at the exit of the gap to increase, and reduces the peak flow velocity behind the forest. Compared to a forest with open gaps in a linear arrangement, specific arrangements of gaps in the forest can increase the energy attenuation from tsunami wave. The results also showed that different cost-effective natural strategies in varying forest parameters including vegetation collocations, densities, and growth stages had significant impacts in reducing the severity of tsunami damage.

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